[XFS] Fix a problem in aligning inode allocations to stripe unit

boundaries.

SGI-PV: 951862
SGI-Modid: xfs-linux-melb:xfs-kern:25726a

Signed-off-by: Nathan Scott <nathans@sgi.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index 4eeb856183b1..deddbd03c166 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -158,9 +158,10 @@ xfs_ialloc_ag_alloc(
          */
         agi = XFS_BUF_TO_AGI(agbp);
         newino = be32_to_cpu(agi->agi_newino);
-        if(likely(newino != NULLAGINO)) {
-                args.agbno = XFS_AGINO_TO_AGBNO(args.mp, newino) +
-                                XFS_IALLOC_BLOCKS(args.mp);
+        args.agbno = XFS_AGINO_TO_AGBNO(args.mp, newino) +
+                        XFS_IALLOC_BLOCKS(args.mp);
+        if (likely(newino != NULLAGINO &&
+                  (args.agbno < be32_to_cpu(agi->agi_length)))) {
                 args.fsbno = XFS_AGB_TO_FSB(args.mp,
                                 be32_to_cpu(agi->agi_seqno), args.agbno);
                 args.type = XFS_ALLOCTYPE_THIS_BNO;
@@ -182,8 +183,8 @@ xfs_ialloc_ag_alloc(
                  * Set the alignment for the allocation.
                  * If stripe alignment is turned on then align at stripe unit
                  * boundary.
-                 * If the cluster size is smaller than a filesystem block 
-                 * then we're doing I/O for inodes in filesystem block size 
+                 * If the cluster size is smaller than a filesystem block
+                 * then we're doing I/O for inodes in filesystem block size
                  * pieces, so don't need alignment anyway.
                  */
                 isaligned = 0;
@@ -192,7 +193,7 @@ xfs_ialloc_ag_alloc(
                         args.alignment = args.mp->m_dalign;
                         isaligned = 1;
                 } else if (XFS_SB_VERSION_HASALIGN(&args.mp->m_sb) &&
-                           args.mp->m_sb.sb_inoalignmt >= 
+                           args.mp->m_sb.sb_inoalignmt >=
                            XFS_B_TO_FSBT(args.mp,
                                 XFS_INODE_CLUSTER_SIZE(args.mp)))
                                 args.alignment = args.mp->m_sb.sb_inoalignmt;
@@ -220,7 +221,7 @@ xfs_ialloc_ag_alloc(
                 if ((error = xfs_alloc_vextent(&args)))
                         return error;
         }
- 
+
         /*
          * If stripe alignment is turned on, then try again with cluster
          * alignment.